Concrete insert



March 22, 1932.

L. R. ZIFFERER GQNCRETE INSERT Filed Oct. 5, 1929 Patented Mar. 22, 19321l UNITED STATES PATIENT g OFFICE LOTHAR R; ZIFFERER, OF COLUMBIA, PENNSYLVANIA; IVIABEL` C.. ZIFFERER, HARRY IE. CHAMPION, AND H.k NELSON ALBRIGHT, EXECUTORS OF SAID LOTHAR yIR.. kZIFFIEIRER,.1)ECEASIE1D, ASSIGNORS T0 COLUMBIA MALLEABLE CASTINGS COBPORA- TION, F COLUMBIA, PENNSYLVANIA, A CORPORATION OF NEW YORK" CONCRETE INSERT Application mea `october 5, 1929. serial No. 397,479.

This'invention relatesk to a concrete insert adaptedy to support an adjustable fastening means; more particularly, the insert is of the A type in which the body is formed of two complementary` parts between which is a protected chamber. The resent invention is concerned with various eatures which adapt the two parts of the linsert for mutual cooperation whereby their construction, :1s-

wlsembly and installation is facilitated, and

whereby a more satisfactory operation'when placed in service, is assured.l The insert is adaptedvto permit the insertion and removal ofnuts when in situ so that itis adapted for "use with bolts of various sizes.y Asuggestive embodiment `of my invention is set forth in the accompanying drawings, wherein-` Figure 1 is a vertical longitudinal section.

through the insert shown in its position ad- A jacent; form boards prior Vto the removal thereof from the concretecasting,

Fig. 2 is a top plan view yof the insert, Fig. 3 isa bottom, plan View thereof,

Fig. 4 is a centralI vertical section through i the insert and surrounding concrete casting,

a pipe hanger beingsupp'orted therefrom,

Fig. 5 is a view in elevation-of one end of the insert.

,j Fig. 6 is a transverse'sectiony therethrough H onthe line 6 #6 of Fig. :2,

F igj 7 isV a fragmentary detailin section Yof thefend wall vtaken ontheyline 7;'7 of Fi 6 Y Y FigYS is an inverted plan of a-nut adapted "-535 to be used withsaid insert, and' Fig. 9 is a sectionaldetail showing a modified form ofy supporting member attached to said insert.

j The body of the present insert consists 'of i twocomplementary metal sections 10- and 411.

which are substantially alike; Each section has *a vertical :side wall constituted bypver- Vtical portions 12 and 13 'connectedv bya lateral offset 14, Vthe construction being :suclr that thewall portions 12jwhichoccupy -a lower position are spaced further apart than lare the upper wall portions 1'3. The endsr of theinsert sections areV formed by lower wall lportions 1:5 which are connected to uppery curved wall portions 16 whichcurveinward- Vly and then outwardly to merge with the top wall 17 and end flanges 18 which project longitudinally therefrom. Lateralfianges 19 -are also preferably provided on the top Wall 17 said flanges 19 being connected to the upper vertical side wall portion 13 and the lateral offset 14 by means of side webs 20. The

curvedend wall portions 16 may be used to receive reinforcing rods 41, which maA be` bottom `plate 21 is' preferably continued to form a flange 25 and adjacent this fiangelateral ears 26 areV provid-ed which are preferably bifurcated, for the reception of nailsv by means of which the insert maybe positionedj upon the form boards 28 prior to pouring-the concrete.

The lowerend wall portions 15 of the section 10 carry'inwardly extending tongues `29 which are provided with vertically extendingA 'headsBO whichY are adapted to be hammered! inwardly toy engage lugs 31 which are formed on the adjacent lower end wall portionsv 15 of the section 11. Itwill readily be understood that by means ofthe tongues andheadsl 29-and1'30 land thelugs l31, the two sections 10" 4and 11 maykreadily be permanently'united into a unit. Y The'top wall 17 ofthe section 10'is provided on its inner side with a relatively thinA flange 32 Vwhich is adapted to become seated in a corresponding recess in the top wall 17 of the section v11 so that the fluid concrete is prelventedffrom flowing into the interior ofthe insert through the line of oin betweensaid Y top wall portions 17. The curved end portions 16- and the vertical Wall portions 15. of

the section 10 are provided along their inner-` most edges with a small flange 33 which engages theinner'side ofthe correspondingendV wall portions of the sect-ion 11 for the'samez` `ars ,- sition of the lateral offsetr14. Said belliedV purpose. If desired, the flanges 33 may make a tight or drive fit with the section 11 and assist the tongues 29 and associated parts in holding the sections 10 and 11 together.

As will readily be understood from vthe practically the whole length of the insert while the upper chamber 35 is substantially shorter owing to the curvature of the wall portions 16. The inner surfaces of the top walls 17 are slanted slightly in such manner that the maximum vertical clearance within the chambers 34 and 35 is along the medial line. 'Ihis is for the double purpose of providing for proper draft in the making of the moulds from which the sections are cast and for supporting the nut and bolt in an equalized manner as best shown in Fig. 6.V When the bolt is screwed in so that its end abuts the top wall of the insert, it will be centered automatically, its axis being then coincident with the medial line.

The inner surfaces of the bottom plates 21 preferably slope downwardly toward the medial line. Along the line of junction between these surfaces and the inner surfaces of lthe side wall portions 12 are provided longitudinal series of protuberances 36 preferably of arcuate configuration. As shown y in Fig. 8, the lower edges of the nut 37 are correspondingly recessed at 39 so as to engag-e therewith. The endof the opening in the nut 37 which is directed outwardly is preferably flared as shown at 40 for the easy insertion of the bolt thereinto. It will be understood that the nut 37 lits freely within the chamber 34 so as to move therealong. When the bolt 24 is screwed into the nut 37 to such an extent that the upper end of the bolt bears upon the roof of the chamber 35, or pressure is otherwise applied upon the nut V37 in a downwardly direction, the recesses 39V at the lower edge of the sides thereof adjacentthe side wall portions 12 engage the protuberances 36 so that lateral movement of the bolt 24 and the load carried thereby is prei vented. It will be understood that when a bolt of different size is to be supported, a nut of the same outside dimensions is employed, the hole and threading of such nut being appropriate to receive the latter bolt. For the purpose of permitting ready removal and replacement of the nut 37, the side wall portions 12 and 13 are provided with an intermediate bellied portion 38 which eX- tends Afrom a level above the protuberances `36 to a level slightly above the normal poportion does not' extend tothe ends of the chamber 34, so that when the nut is moved to either end, the bolt mayreadily be inserted therein. In this position the nut is incapable of being rotated, owing to the relatively snug fit with the walls 12, and is prevented from excessive vertical movement by the lateral offset 14.

In use the portions 10 and 11 are assemled together as a unit and the lower face thereof applied to the form boards and attached thereto by means of nails passed through the slots in the ears 26. The reinforcing rods 41 may be positioned within the curved end walls 16 and the concrete is then poured. The concrete is prevented from passing into the chambers 34 and 35 by the flanges 32 and 33. After the concrete is set the form boards 28 are removed and the insert is ready for use when the concrete has ac quired sufiicient strength to take the load desired.

To apply a load on the insert, a nut 37, having a threaded opening of the necessary size, is inserted edgewise through the slot 23 into the space between the bellied portions 38. It is turned around therein so as to direct the face, having the recessed edges 39, down-1` wardly so that said recesses may co-operate with the protuberances 36 at the join of the sides 12 and the bottom plate 21. In order to insert the bolt 24 in the nut 37, the latter is movedvto one end of the chamber 34, whereits freedom of movement is substantially curtailed, being in close proximity to the one end 15, the sides 12 and the lateral offsets 14. After the.bolt 24 is threaded into the nut 37, the latter is moved along the chamber 34 t0. the desired location, in which it is held by engagement of the recesses 39 with the protuberances 36. The bolt 24 is preferably screwed into the nut 37 until the upper end thereof meets the sloping top walls 17 which direct said end to a central position. When the bolt 24 seats firmly in the apex of said sides, the nut 37 is held immovable on the lower faces 21 by the engagement of the recesses 39 and protuberances 36.

In the modification shown in Fig. 9, I have shown an adapter, having an upwardly extending threaded stud 42, Vwhich is not intended to extend into the upper chamber 35,

but merely securely engages the nut 37. This adapter is also provided with a shoulder 43 which firmly engages the flanges 21 and thereby holds the nut firmly seated upon the upper side thereof. Owing to the engagement between the protuberances 36 and the recesses 39 of the bolt, movement of the latter is effectively prevented. Below the shoulder 43 the adapter is provided with an internally threaded socket 44, into which may be screwed a bolt or other deviceV (not shown); By the use of some such fitting as this adapter, it is possible to support hangers, for example, Where screw threads are of a size or style forbidding direct connection with the nut Within the insert.

I claim:

1. A concrete insert having a body composed of two parts providing between them an elongated chamber to which access is provided by an elongated slot through the insert base, projecting bendable tongues provided with heads on the edges of the ends of one part, lugs on the edges of the ends of the other part, said tongues being bendable to cause said heads to engage said lugs and draw the parts into permanent unitary relation.

2. A concrete insert having a chambered body of two parts Vwith abutting edge portions and an elongated countersunk flange projecting over the lines of abutment adapted to center the one part relative to the other, and co-operating means'integral with the two parts and independent of saidv flanges adapted to interlock the body parts in unitary relation.

3. A concrete insert having a body within which is an elongated chamber the side walls of which are relatively close and far apart in their upper and lower regions respectively, there being in the insert base an elongated slot affording access to the chamber and the side edges of the slot providing opposite ledges on which a nut. is adapted to be supported, the top wall of the chamber being oppositely inclined to center and laterally support a bolt end which is entered through the slot.

4. A concrete insert having a body within which is an elongated chamber provided with a slotted opening in its base, the chamber having a maximum vertical dimension eX- tending centrally of its width, and the walls defining the base opening being slanted interiorily towards the slot through which a bolt is adapted to enter for threaded engagement with a nut supported upon the walls.

adjacent the slot, the bolt end being engageable with the chamber top with which it cooperates toderive support against lateral movement.

5. A concrete insert having a body of two connected parts with interfitting meeting `edges extending medially of the body within which is an elongated chamber having its top and bottom provided with oppositely slanting surfaces such that the maximum vertical clearance is along the medial line, there being formed in the body bottom an elongated slot through which a bolt may pass to engage with a nut confined within the chamber, the bolt end being'itself engageable with the top surface of thel chamber to derive support therefrom.

6. A concrete insert having 4a chambered body, internal flanges adapted to engage the Y underside of a nutto support same, and define an opening whereby said nut and a bolt may be introduced, said body being bellied intermediately of its ends to permit the nut to be rotated therein.

7. In combination, a concrete insert having a chambered body comprising nut supporting flanges, side and top walls and oppositely inclined projections on said flanges, a nut resting on said flanges provided on its underside with inclined recesses adapted to receive said projections, and a bolt member threaded into said nut to engage the top wall and firmly seat and center said nut on said flanges.

8. In combination, a concrete insert havporting flanges and a nut adapted to rest thereon, means cooperating with said flanges adjacent ends of the chambered body in which the nut is adapted to be held when a bolt member is being inserted in said nut, the nut being provided on its underside with an unthreaded flare to facilitate the entrance of said bolt member.

9. In combination, a concrete insert having 'a chambered body comprising nut supporting anges, a nut within said body supported on said flanges, and a supporting member screwed into said nut and provided with a shoulder bearing upon the outer surface of said flanges.

10. In combination, a concrete insert having a chambered bod comprising nut supporting flanges, said anges carrying projections on their inner sides, a nut within said body supported on said Hanges and provided with recesses adapted tov receive said projections, and a supporting member having a bolt portion screwed into said nut and provided with a shoulder bearing upon the outer surface of said fianges so as to hold said projections in the recesses and thus prevent movement of the nut within said body.

In testimony whereof, I have hereunto set my hand this 30th day of August, 1929.

LO'IHAR R. ZIFFERER.

ing a chambered body comprising nut sup- 

